JEE Questions for Chemistry Redox Reactions Quiz 4 - MCQExams.com


Chemistry-Redox Reactions-6748.png
  • 10 : 1 : 4
  • 10 : 4 : 1
  • 4 : 10 : 1
  • 4 : 1 : 10

Chemistry-Redox Reactions-6750.png

  • Chemistry-Redox Reactions-6751.png
  • 2)
    Chemistry-Redox Reactions-6752.png

  • Chemistry-Redox Reactions-6753.png

  • Chemistry-Redox Reactions-6754.png

Chemistry-Redox Reactions-6756.png
  • 5 ml of 0.1 M
  • 10 ml of 0.1 M
  • 10 ml of 0.5 M
  • 10 ml of 0.02 M
The volume of 0.05 M KMnO4 solution required to oxidize completely 2.70 g of oxalic acid (H2C2O4) in acidic medium will be
  • 120 cm3
  • 240 cm3
  • 360 cm3
  • 480 cm3

Chemistry-Redox Reactions-6759.png
  • 1.49 g
  • 2.98 g
  • 5.96 g
  • 8.94 g
When SO2 is passed through an acidified solution of potassium dichromate, the oxidation state of S changes from
  • + 4 to 0
  • + 4 to +2
  • + 4 to + 6
  • + 6 to + 4
When SO2 is passed through a solution of potassium iodate, the oxidation state of iodine changes from
  • + 5 to 0
  • + 5 to – 1
  • – 5 to 0
  • – 7 to – 1
The oxidation number of phosphorus in Ba(H2PO2)2 is
  • + 3
  • + 2
  • + 1
  • –1

Chemistry-Redox Reactions-6764.png
  • Zn is reduced to Zn2+
  • Zn is oxidised to Zn2+
  • Zn2+ is oxidised to Zn
  • Cu2+ is oxidised to Cu

Chemistry-Redox Reactions-6766.png
  • 5
  • 4
  • 3
  • 2
The equivalent weight of MnSO4 is half its molecular weight when it is converted into

  • Chemistry-Redox Reactions-6768.png
  • 2)
    Chemistry-Redox Reactions-6769.png

  • Chemistry-Redox Reactions-6770.png

  • Chemistry-Redox Reactions-6771.png
The oxidation state of chromium in Cr(CO)6 is
  • 0
  • +2
  • -2
  • +6
Which of the following is not a redox reaction?

  • Chemistry-Redox Reactions-6773.png
  • 2)
    Chemistry-Redox Reactions-6774.png

  • Chemistry-Redox Reactions-6775.png

  • Chemistry-Redox Reactions-6776.png
In which of the following pairs, there is greatest difference in the oxidation number of the underlined elements?

  • Chemistry-Redox Reactions-6778.png
  • 2)
    Chemistry-Redox Reactions-6779.png

  • Chemistry-Redox Reactions-6780.png

  • Chemistry-Redox Reactions-6781.png
Which substance serves as reducing agent in the following reaction?
Chemistry-Redox Reactions-6783.png
  • H2O
  • Ni
  • H+

  • Chemistry-Redox Reactions-6784.png
Phosphorus has the oxidation state of +3 in
  • Phosphorous acid
  • Orthophosphoric acid
  • Hypophosphorous acid
  • Metaphosphoric acid
In which of the compounds does manganese exhibit highest oxidation number?
  • MnO2
  • Mn3O4
  • K2MnO4
  • MnSO4
Which of the following reactions depicts the oxidising property of SO2?

  • Chemistry-Redox Reactions-6786.png
  • 2)
    Chemistry-Redox Reactions-6787.png

  • Chemistry-Redox Reactions-6788.png

  • Chemistry-Redox Reactions-6789.png

Chemistry-Redox Reactions-6791.png
  • its molecular weight
  • Atomic weight
  • half-its molecular weight
  • One-third its molecular weight
In which of the following reactions, there is no change in valency ?

  • Chemistry-Redox Reactions-6793.png
  • 2)
    Chemistry-Redox Reactions-6794.png

  • Chemistry-Redox Reactions-6795.png

  • Chemistry-Redox Reactions-6796.png
Nitric oxide acts as a reducing agent in the reaction

  • Chemistry-Redox Reactions-6798.png
  • 2)
    Chemistry-Redox Reactions-6799.png

  • Chemistry-Redox Reactions-6800.png

  • Chemistry-Redox Reactions-6801.png
In which of the following compounds, nitrogen has an oxidation state of -1 ?

  • Chemistry-Redox Reactions-6803.png
  • 2)
    Chemistry-Redox Reactions-6804.png

  • Chemistry-Redox Reactions-6805.png

  • Chemistry-Redox Reactions-6806.png
The oxide which cannot act as a reducing agent is
  • SO2
  • NO2
  • CO2
  • ClO2

Chemistry-Redox Reactions-6808.png
  • FeCl3 acts as an oxidizing agent
  • Both H2S and FeCl3 are oxidized
  • FeCl3 is oxidised while H2S is reduced
  • H2S acts as an oxidizing agent

Chemistry-Redox Reactions-6810.png
  • Bromine is oxidised and carbonate is reduced
  • Bromine is reduced and water is oxidised
  • Bromine is neither reduced nor oxidised
  • Bromine is both reduced and oxidised
Which of the following is a redox reaction?
  • H2SO4 with NaOH
  • In atmosphere, O3 from O2 by lightning
  • Nitrogen oxides from nitrogen and oxygen by lightning
  • Evaporation of H2O
Which of the following elements has least oxidation number?
  • Ni(CN)4
  • Ni(CO)4
  • Fe2O3
  • SF6

Chemistry-Redox Reactions-6814.png
  • 1
  • 2
  • 3
  • 0
In which of the following complexes, oxidation state of metal is zero?

  • Chemistry-Redox Reactions-6816.png
  • 2)
    Chemistry-Redox Reactions-6817.png

  • Chemistry-Redox Reactions-6818.png

  • Chemistry-Redox Reactions-6819.png
The oxidation number of sulphur in S8, S2F2, H2 S respectively, are
  • 0, + 1 and -2
  • +2, + 1 and -2
  • 0, + 1 and +2
  • -2, + 1 and -2
0:0:1


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